6. You have admitted a 20-year-old male to the emergency room with a history of asthma. He is having an acute asthma attack and is wheezing, fighting for air, hypoxic, and afraid. What is causing these acute symptoms?
a. Relaxation of bronchial smooth muscle with dry mucous membranes
b. Constriction of the bronchial smooth muscle and air trapping
c. Acute destruction of lung tissue
d. Contraction of the elastic fibers of the lung